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ระบบบริหารงานคุณภาพ ISO♠ Certificate of Registration ISO 9001:2008 (24 November 2014 - 5 November 2017) ♠ Certificate of Registration ISO 9001:2008 (27 February 2018 - 14 September 2018) ♠ Certificate of Registration ISO 9001:2015 (2 November 2018 - 26 September 2021) ♠ Certificate of Registration ISO 9001:2015 (20 December 2021 - 26 September 2024) |
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